Viscoinertial regime of immersed granular flows
By means of extensive coupled molecular dynamics–lattice Boltzmann simulations, accounting for grain dynamics and subparticle resolution of the fluid phase, we analyze steady inertial granular flows sheared by a viscous fluid. We show that, for a broad range of system parameters (shear rate, confini...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/110589 https://orcid.org/0000-0003-4239-8435 |
| _version_ | 1826191903558729728 |
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| author | Amarsid, L. Delenne, J.-Y. Monerie, Y. Perales, F. Mutabaruka, Patrick Radjai, Franck |
| author2 | MIT Energy Initiative |
| author_facet | MIT Energy Initiative Amarsid, L. Delenne, J.-Y. Monerie, Y. Perales, F. Mutabaruka, Patrick Radjai, Franck |
| author_sort | Amarsid, L. |
| collection | MIT |
| description | By means of extensive coupled molecular dynamics–lattice Boltzmann simulations, accounting for grain dynamics and subparticle resolution of the fluid phase, we analyze steady inertial granular flows sheared by a viscous fluid. We show that, for a broad range of system parameters (shear rate, confining stress, fluid viscosity, and relative fluid-grain density), the frictional strength and packing fraction can be described by a modified inertial number incorporating the fluid effect. In a dual viscous description, the effective viscosity diverges as the inverse square of the difference between the packing fraction and its jamming value, as observed in experiments. We also find that the fabric and force anisotropies extracted from the contact network are well described by the modified inertial number, thus providing clear evidence for the role of these key structural parameters in dense suspensions. |
| first_indexed | 2024-09-23T09:03:06Z |
| format | Article |
| id | mit-1721.1/110589 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:03:06Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1105892022-09-26T10:07:48Z Viscoinertial regime of immersed granular flows Amarsid, L. Delenne, J.-Y. Monerie, Y. Perales, F. Mutabaruka, Patrick Radjai, Franck MIT Energy Initiative Mutabaruka, Patrick Radjai, Franck By means of extensive coupled molecular dynamics–lattice Boltzmann simulations, accounting for grain dynamics and subparticle resolution of the fluid phase, we analyze steady inertial granular flows sheared by a viscous fluid. We show that, for a broad range of system parameters (shear rate, confining stress, fluid viscosity, and relative fluid-grain density), the frictional strength and packing fraction can be described by a modified inertial number incorporating the fluid effect. In a dual viscous description, the effective viscosity diverges as the inverse square of the difference between the packing fraction and its jamming value, as observed in experiments. We also find that the fabric and force anisotropies extracted from the contact network are well described by the modified inertial number, thus providing clear evidence for the role of these key structural parameters in dense suspensions. 2017-07-10T15:39:30Z 2017-07-10T15:39:30Z 2017-07 2017-02 2017-07-05T22:00:03Z Article http://purl.org/eprint/type/JournalArticle 2470-0045 2470-0053 http://hdl.handle.net/1721.1/110589 Amarsid, L.; Delenne, J.-Y.; Mutabaruka, P.; Monerie, Y.; Perales, F. and Radjai, F. "Viscoinertial regime of immersed granular flows." Physical Review E 96, 012901 (July 2017): 1-7 © 2017 American Physical Society https://orcid.org/0000-0003-4239-8435 en http://dx.doi.org/10.1103/PhysRevE.96.012901 Physical Review E Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Amarsid, L. Delenne, J.-Y. Monerie, Y. Perales, F. Mutabaruka, Patrick Radjai, Franck Viscoinertial regime of immersed granular flows |
| title | Viscoinertial regime of immersed granular flows |
| title_full | Viscoinertial regime of immersed granular flows |
| title_fullStr | Viscoinertial regime of immersed granular flows |
| title_full_unstemmed | Viscoinertial regime of immersed granular flows |
| title_short | Viscoinertial regime of immersed granular flows |
| title_sort | viscoinertial regime of immersed granular flows |
| url | http://hdl.handle.net/1721.1/110589 https://orcid.org/0000-0003-4239-8435 |
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